Rack



FIG. 1 is a front/right/top perspective view of a rack (a front/left/top perspective view would be a mirror image thereof);

FIG. 2 is a rear/left/top perspective view thereof (a rear/right/top perspective view would be a mirror image thereof);

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof; and,

FIG. 5 is a rear elevational view thereof.

The broken lines immediately adjacent the shaded areas represent the bounds of the claimed design while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design. 

CLAIM I claim the ornamental design for a rack, as shown and described. 